Magnetic separator



April 28, 1953 B. E. PREVOST 2,636,608

MAGNETIC SEPARATOR Filed April 28, 1950 |89 |80 4 Figi 3 'Iasi a JNVENTOR.- E)/ 7o [7 7 BRUNO E. PREVOST "5 ma BY ll 7 ATTORNEYS Patented Apr. 28, 1953 TENT OFFICE MAGNETIC SEPARATR Bruno E. Provost, North Andover, Mass., assignor to .lohn W. Bolton & Sons, Inc., Lawrence, Mass., a corporation of Massachusetts Application April 28, 1950, Serial N o. 158,675

This invention relates to magnetic separators for trapping metallic particles contained in fluid as the fluid passes through a pipe system.

Heretofore magnetic separators have been constructed in which the floor of the trap com,- partment consists of a removable bottom. plate containing magnetic bars, the non-electric magnets passing through the bottom and projecting below the separator. Since the weight of the metallic particles tends to urge them to the bottom of the pipe system, it is advantageous to have the magnetic plate form the floor rather than the top or sides of the trap compartment. However, in such installations it is diiiicult to remove the bottom plate for cleaning because the separator and pipes may be low and access to the bolts or other holding means is diiicult.

The object of my invention is to provide an improved housing for a magnetic separator in which a magnetic plate forms a iioor for the trap but the plate is entirely contained within the trap compartment and can be slidably removed for cleaning through a side opening in the compartment.

A further object of my new housing is to include entrance and exit apertures in the trap compartment which are wider and more shallow than the intake and outlet ports of the housing, thus permitting the compartment to be of restricted height over the magnetic plate.

A still further object of my device is to include within the housing as an integral part thereof, a by-pass so that the trap compartment may be shut off temporarily for cleaning of the magnetic plate, while the uid pipe system continues in operation.

In the drawings,

Fig. 1 is a side view, partly in section, of my new magnetic separator housing.

Fig. 2 is a plan view thereof, with the top broken away to show the interior.

Fig. 3 is a side View, partly in section, of a modification of my housing which includes a bypass and valves.

Fig. 4 is an end View in section on line 5 4 of Fig. 3.

In Figs. l and 2, I show the preferred form of the housing A of m'y new magnetic separator installed between pipes II) and II of a fluid pipe system. The intake port I2 and outlet port I3 of A may be connected to pipes III and II by bolts I4, as shown; or by any other suitable means.

An elongated central trap compartment I5 is provided in A, having parallel top and bottom 1 Claim. (C1. 210-15) walls I6 and II, openings I8 and I9 in sides 2U and 2| and ends 22 and 23. Sides 2|! and 2| are cover plates `and are removably retained in place by bolts 25 threaded in recesses 25 in the housing. A conduit 26, forming a passage 21, connects intake port I2 with an aperture 28 in the upper portion of end 22 of the trap compartment I5 and a similar conduit 29, forms a passage 30 connecting outlet port I3 with an aperture 3| in the upper portion of the end 23 of trap compartment I5. The cross sectional area of entrance and exit apertures 28 and 3| is substantially equal to that of intake port I2 and outlet port I3 but the aperture is of greater width and less height than the ports. The side Walls 32 and 33 of a conduit such as 26 preferably diverge, and the top and bottom Walls 34 and 35 preferably converge, as they approach compartment I5 in order to prevent eddying or other disturbance in the ow of the fluid.

Trap compartment I5 is equal in width to the Width of apertures 28 and 3| but is considerably p greater in height so that the cross sectional area of the compartment is greater than that of ports I2 and I3. Just below the lower edges 31 and 38 of apertures 28 and 3|, I provide guide tracks 39 and 45 which extend across I5 and consist of a pair of flanges integral with the housing and projecting into compartment I5.

A magnetic plate 55 is slidably mounted in tracks 39 and 4I) so that it can be removed for cleaning, through an opening such as I8 or I9, when cover plates 20 and 2| are unbolted or otherwise removed. Plate 50 comprises permanent magnets 5I, each having its opposite poles in contact with bars 52 and 53, the bars being separated by and supported by suitable insulating and supporting members 54. The magnetic surface 55 of plate 50 forms a floor for compartment I5, and together with top I 5 and sides 20 and 2l forms a fluid conduit of the same cross sectional area as apertures 2B and 3|. The entire plate 5t thus forms a partition intermediate of the height of trap compartment I5, in the nature of a false bottom above bottom Il, and is entirely enclosed within trap compartment I5.

In Figs. 3 and 4, I show a modified form of housing B, having a central trap compartment H5, apertures |28 and |3I and magnetic plate I5!! all corresponding to parts I5, 28, 3| and '50 of A. Housing B includes however a by-pass conduit I lt, which directly connects intake ports I2 and I I3 and is of substantially the same cross sectional area therewith although wider and more shallow.

Cylindrical recesses 1| and |12 are provided in B, proximate to, or in continuation of, ports ||2 and H3 and valves |13 and |14 in tubular form are revolubly mounted therein, each valve having a central shaft such as |16 projecting outside the housing. A pulley such as |18 on each shaft such as 1| 1.6 is connected by a :belt H8 or |39 to a pulley such as |312 on shait |28| Acentrally located in the upper exterior of B. The turning of handle |89 will thus revolve each valve |73 and |74 simultaneously.

An oppositely disposed pair of elongated apertures |82 and |83 is provided in each valve ,|13 or I'l so located that fluid canbe admitted to passage |21, compartment ||5 and passage |38 or can be diverted therefrom intonby-pass conduit |10 by turning handle |38, When'the magnetic plate |53 is to be removed for cleaning.

As in the form of my device shown in Figs. 1 and 2, the magnetic plate |50 forms a falsebottom, intermediate of chamber H5, and can be slidably removed through `a side opening `Il] in housing B by removing cover plate 12D.

I claim:

In a magnetic separatona housing having an intake port and an outlet port of equal cross sectional area arranged for connection in a :duid pipe system, a central elongated compartment of greater cross sectional area than said ports .and

having elongated compartment openings in the sides thereof; conduits in said housing forming passages with gradually diverging side walls and gradually converging top and bottom Walls from each port to entrance and exit apertures in the upper portion of each end of the compartment, each aperture'being of greater width and less height than said ports but of substantially equal cross sectional area therewith; oppositely dis- `:posed guide tracks each extending across said compartment below the aperture at each end;

`a flat magnetic plate slidably mounted in said .guide tracks forming a oor extending across the compartment, .the cross sectional area of the `iicmn-pantmerit above said floor plate being substantially equalto the cross sectional area of the `ports and apertures and cover plates removably 'mounted lon said housing over the compartment openings.

.BRUNO E. PREVOST.

References Cited `in the file of this patent UNITED STATES PATENTS Number Name Date .551,044 Park Dec. 10, 1895 y581,101 Brown Apr. 20, 1897 2,283,264 Byrd, Jr June 30, 1942 .2,464,628 'Willard Mar. 15, 1949 

